Online Parts Store › Phillips Machine Screw - Flat Head, 3/8"-16 x 3" Image 1 of 1 Phillips Machine Screw - Flat Head, 3/8"-16 x 3" $31.11 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Stainless Fender Washer 1/4", .062" Thick1/4", OD1-1/4" $59.33 Square Tapping Screw - Oval Head #10 x 1-1/4" $57.05 Phillips Tapping Screw - Truss Head #8 x 1/2" $18.52 Phillips Tapping Screws - Oval Head, #10 x 1-1/4" $28.85 Phillips Tapping Screw - Pan Head, #8 x 1" $21.73